public class TestpriorityQueue {
    public static void main(String[] args) {
        Card c1 = new Card(1, "♠");
        Card c2 = new Card(2, "♠");
        Card c3 = c1;
        System.out.println(c1==c2);
        System.out.println(c1==c3);
    }
    public boolean equake(Object obj){
        return (this==obj);
    }
}

